Portable vulcanizer



w. FROST. PORTABLE VULCANIZER.

APPLICATION FILED M AR- l, 1920- 1,360,962. Patented Nov. 30, 19 20.v

k 2 SHEETSSHEET l.

W. FROST.

PORTABLE VULCANIZER. APPLICATION FILED MAR. 1. 1920.

1,3 0,9 2, Patented Nov. '30, 1920.-

2 SHEETS-SHEET 2- UNITED STATES PATENT OFFICE. VTILL IAM FROS'liOF LONDON, ENGLAND, ASS IGNCR TO HARVEY FROST & COMPANY, LIMITED, 01 LONDON, ENGLAND.

PORTABLE VUL'CANIZER.

Specification of Letters Patent. Patented N 30, 192() Application filed March 1 1920. Serial 110,362,181.

To all whom it may concern.- v Be it known that I, WILLIAM Fnosr, a subect of the King of England, residing 1n London, England, have invented certain new ject to provide a vulcanizer whereof the vul- 'ableheat is required and also considerable canizing surface shall be brought nearer to the heating chamber than has heretofore been possible.

According to this invention a portable vulcanizer, of the type wherein a detachably secured molding-plateconstitutes one. wall of the heating-chamber, is characterized by the said molding-plate being of circular form and by the steam-chamber being provided with'a neck having a circular flange around it to receive bolts for securing the molding: plate to the heating-chamber; 1

This invention is particularly applicable to 'vulcanizers for solid tires where considerpressure, and a further feature of theinv'ention relates to clamping-means for thrusting the vulcanizer' with the necessary pressure against the tire to be repaired.

In the accompanying drawings which illustrate one method of carrying out this invention v Figure l is a front view of the 'vulcanizer without its heating apparatus and with the molding-plate detached Fig. 2 is a side elevation of the same, with the molding-plate secured in place;

Fig. 3 is a central vertical section through Fig. 1 on the line 3-3; V

Fig. 4 is a face view of the molding-plate;

Fig. 5 is a section through the same on the line 5-5 of Fig. 4, and

Fig. 6 is a perspective view of the vulcanizer clamped in position on a tire.

The same letters indicate the same parts throughout the drawings.

The vulcanizer comprises a steam-chamber A which is in communication with a steamgenerating chamber A The steam-generating chamber may be heated bymeans which are not shown in the drawings and constitute no part of thepresent invention, but tubes A are indicated for the passage of the hot gases of combustion from a suitable burner.

for tire-repairs, and has for its ob-i The front portion of the steam-chamber is made to overhang the steam-generating chamber so that a forwardly-projecting neck A is provided having'a surrounding circular flange A. The flange is provided with a series of notches A to receive bolts as hereinafter described, and the front wall of the steam-chamber is provided by a moldingplate having notches B corresponding to the notches A 7 o The front face of the molding-plate is shaped to correspond to the particular tire and to thepaticular part of that tire with which it is intended to be used, and a series of these plates would be provided for each vulcanizer, so that various makes of tire and different parts of the same could be vulcanized with the same vulcanizer.

The back of the plate is roughened at the edges as shown at B Fig. 5, to receive pack ing to make a joint with the flange A; the flange also may be roughened if desired.

The interior of the steamchamber A is strengthened by webs A radiating from a central boss A", and in this central boss is secured a screw-threaded stud C. The back of the steam-chamber is made flat and it is set in from the back of the steam-generating chamber, so that a square shoulder C is provided.

To secure the vulcanizer in place for effecting a tire repair, a clamp is employed comprising an outer bridge-piece D which is webbed along the center to stiffen it and is provided with a central boss D to receive the stud C. The bridge-piece is fixed to the vulcanizer by a wing-nut D which is screwed on to the end of the studflC and the side of the bridge-piece lies against the shoulder C provided by the steam-generating chamber.

. The ends of the bridge-piece are slotted as shown at D two slots being provided at each end, which slots receive bolts E from cooperating bridging-rods E The rods are provided with a series of perforations E and the bolts E are bifurcated at their ends dlfl'erent'sized tires and makes of I'lIIl. By screwing up the nuts on the bolts E, 'th'e'vulcanizervcan be forced upon the tire with considerable pressure. 7

When about to effect a repair, all the operator has to do is to select a moldingplate B Whose shape suits the tire and the v part of it which is to be repaired, and then 'isprovided betweenthe opposed faces of these tWo parts'and thus when the bolts are to fix this plate to the steam chamber by means of bolts and nuts F, seeFigs. 2 and 5. -The nuts need never be separated from the bolts as they are slipped laterally into place intothenotches A of the steam-cham- 7 Vber flange A and the notches B of the molding-plate B; jA little packing material flan e and is connected With the stea1ngenerating chamber by a neck,- and'a circular molding plate detachably bolted to said flange.

2. In a Vulcanizer of the character described, the combination of a heating cham ber comprlsmg a steamgeneratmg chamber,

and a'steam-chamber' that has a circular Y flange at tllG-ilQIltflS connected :With the steam-generating chamber by a neck and carries at the back a rearWardly-projecting sti1cl,1a' circular molding plate detachably bolted to said flange, and clamping means detachably attached to said stud.

3. In a vulcanizer of the character described, the combination of aheating chamber comprising a steam-generatlng chamber, and a steam-chamber that has a circular flange at the front, is connected with the steam-generating chamber by a neck and carries at the back a rearwardly-projecting stud, a circular molding plate. detachably bolted to said flange, and clamping means compiI-ising't'w'o bridge-pieces and bolts detachabiy connecting the same rtogether,

whereof one'bri'dge-piece is detachably attached to' said stud.

4-4 In a vul'canizer of the character described, th ei combination of a heating chamber comprising a steam-generating chamber, and a steam-chamber that has a circular flange at'thej front, is connectedwith the steam-generating chamber by a neck and carries at the back a rearWardly-proj'ecting stud, which steam-chamber is set'forward relatively to the "steam-generating chamber so that a shoulder isfprovided at the back of the steam-chambeija circular molding plate detachably bolted to said flange, and clamping means bearing against said shoulder and detachably attachedto said study 7 5. In a 'vulcani'zer of the character described the combination of a heating'chamber comprising asteam generating chamber, 7

and a circular steam-chamber that has a circular flange and 1s connected with the steam-generating chamberfby a neck,- said steamfchamber having radial strengthening Webs connecting one end Wall With the sides of the chamber, and a clrcular molding plate detachably bolted to said flange.

In testimony whereof I itiIlX 'my-signature.

. t WILLIAM FROST." 

